8/30/20191

Nevada DOT

Weather-Responsive Traffic

Management (WRTM)

Rod Schilling, NDOT

2

2019 Road Weather Management

Stakeholder Meeting

Phoenix, Arizona

August 27-29, 2019

Nevada DOT WRMS Framework

3

In-Vehicle Equipment:• Weather Sensors• Vehicle Sensors (OBU, CANBus)• Equipment Sensors (Spreader)• Location Sensor (GPS)• Radio

Applications and MMS:• Winter Maintenance

- Treatment Recommendations

- Material Usage Tracking• Traffic Management

- Traveler Information• Data Management Systems

- WxDE, NCAR, etc

Nevada IMO Project

• Approx. 60 vehicles equipped to acquire mobile data including:- Air Temperature - Surface Temperature- Relative Humidity- Atmospheric Pressure- Wiper Status- Spreader Rate

• Supports a number of WRMS Applications - WRTM

- Data is processed through the Nevada Data Exchange (NDEX) - Road Weather Information System (RWIS) Data- Digital Camera Images - Mobile (IMO) Data

- WRMM- Enhanced Maintenance Decision Support System (eMDSS)- Motorist Advisory and Warning- Material Usage Tracking

4

8/30/2019

NIMO 3 Vehicles

- 9 Snow plows with instrumented spreader motors and 1 freeway service patrol vehicle- 5 in Reno- 3 in Carson City- 2 in Lake Tahoe

District II IMO InventoryUNIT # YEAR MAKE MODEL DESCRIPTION

2272 2007 PETERBILT 357 TANDEM AXLE DUMP TRUCK

1915 2007 PETERBILT 357 TANDEM AXLE DUMP TRUCK

0763 2009 PETERBILT 367 TANDEM AXLE CAB AND CHASIS

2275 2007 PETERBILT 357 TANDEM AXLE DUMP TRUCK

3200 2007 PETERBILT 357 TANDEM AXLE DUMP TRUCK

2274 2007 PETERBILT 357 TANDEM AXLE DUMP TRUCK

3319 2009 PETERBILT 367TANDEM AXLE CAB AND CHASIS SWL

0323 2007 PETERBILT 367 TANDEM AXLE CAB AND CHASIS

0267 2001 INTERNATIONAL 5000 AWD

R1 2012 FORD E240 FREEWAY SERVICE PATROL VAN/PU5

Plow On-Board Hardware

Mirror MountedAir Temp -

Atmospheric PressureComet Sensor

Rear Mounted Spreader RateCustom Sensor

Behind Passenger Seat Mounted

OBU – ARADA SystemMirror Mounted

Air/Pavement Temp –Roadwatch Sensor

Mirror MountedMulti-band Diversity

AntennaCell, WIFI & GPS

Mobile Mark Sensor

NIMO 3 On Board Units (OBU)

DSRC Site Locations

8

18 Locations along I-580

1. I-802. Mill Street3. Plumb Lane4. Moana Lane5. Peckham Lane6. Neil Road7. Exit 61, Virginia St8. Arrow Creek9. SR 431, Mt. Rose Hwy10. Galena Forest11. Steamboat Hills12. Galena Creek13. Brown’s Creek14. Parker Ranch15. Bower’s16. Washoe Valley17. Arrowhead Dr18. 5th Street

Vehicle Routes

Cellular

DSRC

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18 DSRC Locations32 Miles DSRC54 Miles Cellular

Nevada DOT WRMS Framework

10

In-Vehicle Equipment:• Weather Sensors• Vehicle Sensors (OBU, CANBus)• Equipment Sensors (Spreader)• Location Sensor (GPS)• Radio

Applications and MMS:• Winter Maintenance

- Treatment Recommendations

- Material Usage Tracking• Traffic Management

- Traveler Information• Data Management Systems

- WxDE, NCAR, etc

WRTM

• NDOT’s coloimomesssrv1 (aka – mESS server)• IMO3 configurations and applications utilizing the NDOT

coloimomesssrv1

• mESS server database receiving IMO3 OBU and RSU observation and local mapping application running

• All RSU’s using IP/Ethernet

• IP Host OBU Plan implemented

• NDEX Interface Control Document (ICD) complete

• Switch over for all mESS and RSU data to NDOT mESS server completed

• JSON format

8/30/201911

IMO 2272

8/30/201912

FSP

8/30/201913

IMO 0267

8/30/201914

Nevada DOT WRMS Framework

15

In-Vehicle Equipment:• Weather Sensors• Vehicle Sensors (OBU, CANBus)• Equipment Sensors (Spreader)• Location Sensor (GPS)• Radio

Applications and MMS:• Winter Maintenance

- Treatment Recommendations

- Material Usage Tracking• Traffic Management

- Traveler Information• Data Management Systems

- WxDE, NCAR, etc

WRTM

8/30/201916

Nevada Data Exchange (NDEX) - General Concept

• Detector Station

• CCTV

• Dynamic Message Sign (DMS)

• Environmental Sensors (ESS)

• Mobile Environmental Sensors (mESS) – (No National Standard)

• Highway Advisory Radio (HAR)

• Incidents/Events

• Ramp Meter

• Node, Link, Traffic Network

NDEX messages include

inventory and device status

17

NDEX Device Types

18

Nevada Data Exchange

• Environmental Sensor Stations (ESS)•Road Weather Information Sites (RWIS)

•135 Nevada DOT non-invasive and invasive sites•Wind Speed and Direction; Gust Speed and Direction; Visibility; Air Temperature; Relative Humidity; Dew Point; Rain (Yes/No), Rate; Road Grip; Water Layer, Ice Layer; Snow Depth, Snow Layer; Surface Temperature; Pavement Temperature; Soil Temperature; Surface Status and Surface Freeze Point

• Mobile Environmental Sensor Stations (mESS)•IMO •Approximately 60 vehicles equipped to receive mobile weather data

•Air Temperature •Surface Temperature•Relative Humidity•Atmospheric Pressure•AVL•Wiper Status and Rate•Spreader Rate

NIMO 3 Sensor Package Inventory

8/30/201919

Sensor ID Manufacturer Source Unit of Measure Target Observation Type

ATRoadwatch NTCIP 1204 ESS Air Temperature

RTRoadwatch NTCIP 1205 ESS Surface Temperature

ATComet Temperature Celsius NTCIP 1204 ESS Air Temperature

RHCometRelative Humidity, percent NTCIP 1204 ESS Relative Humidity

APCometAtmospheric Pressure, Bar NTCIP 1205 ESS Atmospheric Pressure

GPGGA Cradlepoint NMEA 0183 Sentence GPGGA NMEA 0183 Sentence GPGGA

WRAdam Adam Wiper Rate SAE J2735

Roadwatch Temperature Celsius

Comet

8/30/201920

NDEX Key Stakeholders (Users)

• Traffic Management Centers (D2 Reno, D3 Elko, & D1 / FAST / Las Vegas)

• External Centers (UNR, UNLV, UC Davis, & DRI)

8/30/201921

NDEX Key Stakeholders (Users)

• Other County and City TMCs (RTC South / Seeing Orange)• NDOT 511 (VoltDelta) and Nevada Highway Patrol (NHP)• NIMO, WxDE, and NCAR• Future integration: RTC North, Schneider Electric, and

Waze (Several weeks to 1 ½ years of integration effort)

30 days 2 mos. to 1 ½ yrs. 9 mos. to 1 yr.